Contacts of the helix formed by residues 329 - 337 (chain B) in PDB entry 1L8A
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ASP 329 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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328B LYS* 1.3 86.2 - - - +
330B GLY* 1.3 64.8 + - - +
331B ALA* 3.8 16.9 + - - +
332B TYR* 3.0 22.5 + - - +
333B VAL* 3.1 24.6 + - - +
357B TRP* 3.2 19.0 - - + -
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Residues in contact with GLY 330 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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329B ASP* 1.3 76.0 - - - +
331B ALA* 1.3 62.6 + - - +
333B VAL* 3.3 4.9 + - - +
334B ARG* 2.9 24.9 + - - +
353B ASP* 3.3 32.6 - - - +
356B ILE* 4.0 4.0 - - - +
357B TRP* 3.4 20.9 - - - +
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Residues in contact with ALA 331 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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329B ASP* 3.3 15.7 + - - +
330B GLY* 1.3 74.5 - - - +
332B TYR* 1.3 64.1 + - - +
334B ARG* 3.2 6.9 + - - +
335B GLU* 3.1 24.7 + - - +
353B ASP* 3.1 29.8 + - - +
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Residues in contact with TYR 332 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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324B THR* 4.2 11.7 + - - -
325B PHE* 3.6 27.8 - + - -
328B LYS* 3.3 53.8 - - + -
329B ASP* 3.0 21.1 + - - +
331B ALA* 1.3 76.6 - - - +
333B VAL* 1.3 54.8 + - - +
335B GLU* 3.2 2.5 + - - -
336B HIS* 2.7 85.7 + + + +
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Residues in contact with VAL 333 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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298B TRP* 6.3 0.4 - - + -
325B PHE* 4.1 24.7 - - + +
329B ASP 3.1 13.3 + - - +
330B GLY 3.7 6.3 - - - +
332B TYR* 1.3 79.8 - - + +
334B ARG* 1.3 60.7 + - - +
337B PHE* 2.8 40.2 + - + +
338B PHE* 3.2 21.1 + - + -
356B ILE* 3.7 22.4 - - + +
357B TRP* 3.8 22.2 - - + -
359B LEU* 5.8 0.4 - - + -
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Residues in contact with ARG 334 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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330B GLY 2.9 17.2 + - - +
331B ALA* 3.5 7.4 - - - +
333B VAL* 1.3 75.8 - - - +
335B GLU* 1.3 59.2 + - + +
338B PHE* 3.5 16.4 - - - +
339B GLY* 2.7 30.1 + - - -
345B ALA* 5.6 1.1 + - - +
348B VAL* 2.9 32.5 + - + +
349B ALA* 4.0 10.1 + - - +
351B TRP 2.9 22.4 + - - -
352B THR* 3.5 2.0 - - - +
353B ASP* 2.7 36.3 + - - +
356B ILE* 3.5 22.0 - - + +
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Residues in contact with GLU 335 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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331B ALA 3.1 16.3 + - - +
332B TYR* 3.7 2.9 - - - +
334B ARG* 1.3 82.6 - - + +
336B HIS* 1.3 86.5 + - + +
339B GLY* 3.2 24.3 - - - +
340B LYS* 5.5 0.9 - - - -
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Residues in contact with HIS 336 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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325B PHE* 3.9 13.0 - - + -
332B TYR* 2.7 83.6 + + + +
335B GLU* 1.3 100.1 + - + +
337B PHE* 1.3 58.4 + - - +
340B LYS* 3.2 32.9 - - - +
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Residues in contact with PHE 337 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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294B TRP* 5.5 0.2 - + - -
298B TRP* 3.8 27.4 - + - -
310B LEU* 4.3 2.0 - - + -
313B LEU* 3.1 47.1 - - + +
314B MET* 4.1 21.1 - - + -
317B THR* 3.7 15.5 - - - -
322B TYR* 3.8 21.8 - + - -
325B PHE* 3.5 29.8 - + + -
333B VAL* 2.8 27.5 + - + +
336B HIS* 1.3 72.1 - - - +
338B PHE* 1.3 95.9 + + - +
339B GLY 3.1 0.4 - - - -
340B LYS* 3.1 16.7 + - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il